A Major scale
The A Major scale has the formula 1, 2, 3, 4, 5, 6, 7 with notes A, B, C#, D, E, F#, G#
The major scale, also known as Ionian scale, is a very popular diatonic scale. It is one of the most commonly used scales in the world. In Western music, it is preceived as sounding happy.